Hello Orchidland, First: the lesson I learned is ALWAYS look at
hallmarks under magnification before doing anything else.
My problem: After I'd cut this 14K yellow and white gold wedding
band down for sizing and brought the ends together, the ring would
change shape when heated for soldering so that there was a
significant gap between the ends. As the ring cooled, the gap would
diminish and the ends would come back together. I tried a clamp -
same story. I tried binding wire, once then a second time with
multiple wraps - same story.
Finally, I took it to the microscope and found beside the 14K mark,
in tiny letters: “900 Plat, 100 Irid.” You could see the light
bulb blaze on over my head as I realized that the small "white gold"
band on the top of the yellow gold band is actually platinum.
(There must be a huge differential in expansion between the two
metals as the platinum band is quite small in comparison to the
yellow gold band.)
So, now what do I do? I checked my reference books and although a
reference is made to concerns related to compressing mixed metal
bands, there is nothing about cutting them down.
I'm hoping someone out there will (after shaking his/her head over
my stupidity) be able to tell me how to accomplish my goal. Is this
a job for a laser? Judy in Kansas - wiser now for sure!
Judy M. Willingham, R.S.
Biological and Agricultural Engineering
237 Seaton Hall
Kansas State University
Manhattan KS 66506